CN206756962U - XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind - Google Patents
XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind Download PDFInfo
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- CN206756962U CN206756962U CN201720486348.5U CN201720486348U CN206756962U CN 206756962 U CN206756962 U CN 206756962U CN 201720486348 U CN201720486348 U CN 201720486348U CN 206756962 U CN206756962 U CN 206756962U
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Abstract
The utility model discloses XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind, it is related to power cable aging and its detection technique field.The high-frequency electrical ageing test apparatus includes high frequency test voltage generating unit, high frequency voltage test loop unit, power frequency load current simulation generating unit and insulation information monitoring unit；High frequency electric field caused by high frequency test voltage generating unit carries out high frequency voltage ageing to XLPE cable annex, power frequency load current simulates generating unit caused heat in the unit of high frequency voltage test loop and carries out heat ageing to XLPE cable annex, the two work simulation actual operating mode of XLPE cable annex simultaneously；Insulation information monitoring unit uses non-invasion monitoring method, realizes the status monitoring of middle pressure XLPE cable annex insulation characterisitic parameter.
Description
Technical field
The utility model belongs to power cable aging and its detection technique field, more particularly to pressing XLPE cable in one kind
The high-frequency electrical ageing test apparatus of annex.
Background technology
In recent years, as the continuous expansion of power system capacity, the complexity of power consumer equipment increase therewith, particularly
Some proportions of Large Copacity nonlinear load in system total load constantly rise, and the harmonic problem of power system becomes increasingly to dash forward
Go out.In the presence of the harmonic wave comprising numerous radio-frequency components, the Insulation Problems of power equipment become more serious, cause equipment mistake
Early there are the failures such as unconventional aging, damage.At present, exist largely in the middle pressure XLPE cable terminal of fortune in power network, and it is electric
Cable terminal accident is the main reason for causing cable run trip accident, and the influence that high-frequency harmonic deteriorates to cable terminal insulation
It is extremely obvious.It was verified that press XLPE cable terminal in some tradition under serious harmonic wave effect, its aging substantially aggravates,
Life-span greatly shortens, and even results in the generation of insulation fault.Therefore, need badly and the examination of XLPE cable annex high frequency voltage ageing is pressed in one kind
Experiment device, to press high frequency electric stress of the XLPE cable annex in actual operating mode in simulating, and obtain sample aging mistake
Temperature characteristic and shelf depreciation collection of illustrative plates in journey, so as to analyze its insulation ag(e)ing situation.
Limited because the output capacity of high frequency exciting transformer is present, during degradation, high frequency exciting transformer exists
When high-frequency and high-voltage is provided, it is difficult to while output can simulate the load current of actual operating mode.At present, domestic and international high frequency voltage ageing
The mentality of designing of experimental rig more using the illumination of high frequency voltage generating means joint, it is outer hot the methods of, it is attached to be difficult to cable
Insulation accelerated degradation of the part under high frequency electric field and power frequency load current collective effect.
Utility model content
In view of the shortcomings of the prior art, the utility model, which provides, presses XLPE cable annex high frequency electrical ageing test dress in one kind
Put, the actual condition for bearing high frequency electric field and power frequency load current in XLPE cable annex running simultaneously pressed in simulation,
Realize the cable accessory degradation under heatronic synergy.
The utility model is that solve above-mentioned technical problem by the following technical solutions：Press XLPE cable attached in one kind
Part high-frequency electrical ageing test apparatus, including high frequency test voltage generating unit, high frequency voltage test loop unit, power frequency load electricity
Flow field simulation generating unit and insulation information monitoring unit；The high frequency test voltage generating unit, for producing needed for experiment
High frequency voltage is simultaneously supplied to high frequency voltage test loop unit；The high frequency test voltage generating unit and the high-frequency electrical
Press the electrical connection of test loop unit；High frequency voltage test loop unit, for providing test loop；The power frequency load electricity
Flow field simulation generating unit is connected to high frequency voltage test loop unit, using magnetic coupling mode, to simulate generation power frequency
Load current；The insulation information monitoring unit is connected on the ground lead of high frequency voltage test loop unit, is used for
Monitor the state of XLPE cable annex insulation characterisitic parameter；Described high frequency voltage test loop unit includes XLPE connections electricity
Without shelf depreciation wire and cable termination pilot system, it is whole that described cable termination pilot system includes the first cable for cable, second
Hold pilot system and the second cable termination pilot system；The first described cable termination pilot system and the experiment of the second cable termination
System is connected to form test loop by XLPE connecting cables and second without shelf depreciation wired in series；In degradation,
The high frequency test voltage generating unit and power frequency load current simulation generating unit are run simultaneously, to reach the high frequency
Test specimen bears the purpose of high frequency voltage and power current effect simultaneously in voltage test circuit units.
Further, it is attached to include internal the first cable containing typical defective mounting for the first described cable termination pilot system
Part and the first GIS air chambers；It is attached that the second described cable termination pilot system includes internal the second cable containing typical defective mounting
Part and the 2nd GIS air chambers；Described the first cable accessory and the second cable accessory, for studying typical case's peace in high frequency degradation
Insulation degradation process of the defect under high-frequency and high-voltage effect is filled, its one end inserts the first GIS air chambers and the 2nd GIS air chambers respectively
In, the other end is connected with each other by second without shelf depreciation wire；The first described GIS air chambers and the 2nd GIS air chambers, for arranging
The corona interference that may be introduced during except test loop unit shelf depreciation, the first described GIS air chambers and the 2nd GIS air chambers pass through
XLPE connecting cables are connected with each other.
Further, described high frequency test voltage generating unit include HF signal generator, power amplifier and
High frequency exciting transformer；Described HF signal generator electrically connects with described power amplifier, and the high-frequency signal occurs
Device produces high frequency low voltage signal, and is amplified by the power amplifier；The power amplifier by protect electric capacity with
The high frequency exciting transformer electrical connection；The protection electric capacity is used for the output impedance for changing power amplifier, to prevent power
Amplifier produces excessive power output；The high frequency exciting transformer, for the high frequency low voltage to amplifying through power amplifier
Signal is boosted to obtain the high-frequency and high-voltage needed for experiment；The high frequency exciting transformer is by protective resistance and first without office
Portion's electrical discharge wire is electrically connected with described high frequency voltage test loop unit；Described first without shelf depreciation wire with it is described
Second without being electrically connected in the middle part of shelf depreciation wire；The protective resistance, for limiting the defeated of high frequency exciting transformer
Go out electric current and carry out overcurrent protection；Described first without shelf depreciation wire, for high frequency caused by high frequency exciting transformer is high
Pressure leads to high frequency voltage test loop unit.
Further, it is mutual to include 220V power-frequency voltages, centre path current for described power frequency load current simulation generating unit
Sensor and pressure regulator, the input of the pressure regulator are connected with 220V power-frequency voltages, and the output end of the pressure regulator is worn with described
The secondary side connection of core type current transformer, the XLPE connecting cables are centrally formed through the straight-through current transformer
Magnetic coupling loop；It is described under electromagnetic induction principle when flowing through power current in the secondary coil of straight-through current transformer
Power current will be produced in the unit of high frequency voltage test loop；By controlling the output voltage size of pressure regulator, change punching
Size of current in Current Transformer Secondary coil, so as to realize the adjustment on demand of electric current in the unit of high frequency voltage test loop.
Further, described insulation information monitoring unit includes infrared thermoviewer, HF current transformer and high frequency
Partial discharge monitoring instrument, the HF current transformer include the first HF current transformer and the second HF current transformer；
Described infrared thermoviewer, for monitoring the temperature on the first cable accessory and the second cable accessory surface during high frequency degradation
Spend situation of change；Described the first HF current transformer and the second HF current transformer is respectively engaged with the first GIS air chambers
On the ground lead of the 2nd GIS air chambers, and it is connected respectively with described high frequency partial electric discharge monitor；Described high frequency partial
Discharge monitor, for monitoring during high frequency degradation typical defective mounting in the first cable accessory and the second cable accessory
Shelf depreciation situation of change.
Compared with prior art, middle pressure XLPE cable annex high-frequency electrical ageing test apparatus tool provided by the utility model
Have the advantage that：
The utility model simulates that middle pressure XLPE cable annex is operated in high-frequency and high-voltage and power frequency load current is lower is born
High frequency electric field and electric current thermal stress, wherein high frequency electric field caused by high-frequency and high-voltage to XLPE cable annex carry out high-frequency electrical
Aging, power frequency load current caused heat in the unit of high frequency voltage test loop carry out heat ageing to XLPE cable annex,
The two work simulation actual operating mode of XLPE cable annex simultaneously；And apply tremendously high frequency voltage test loop by controlling
The high-frequency and high-voltage and power frequency load current value of unit, the acceleration high frequency electrical ageing test of XLPE cable annex can be achieved.
The utility model employs the insulation information monitoring method of non-intrusion type, and measurement process is safe and reliable, can monitor
The shelf depreciation response characteristic and its Thermal imaging spectrum of the lower XLPE cable annex typical case's defective mounting of high-frequency and high-voltage excitation；Meanwhile institute
State each connecting portion of high-frequency electrical ageing test apparatus and do halo-free and pressure processing, effectively reduce high frequency voltage test loop
Interference of the unit corona discharge to XLPE cable annex partial discharge monitoring, reduce the difficulty of Analysis on monitoring data processing.
Brief description of the drawings
It is required in being described below to embodiment to use in order to illustrate more clearly of the technical solution of the utility model
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only one embodiment of the present utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of middle pressure XLPE cable annex high-frequency electrical ageing test apparatus of the utility model；
Fig. 2 is the internal structure signal of the utility model high frequency voltage test loop unit and insulation information monitoring unit
Figure；
Wherein：1- high frequency test voltage generating units, 2- high frequency voltages test loop unit, the simulation of 3- power frequencies load current
Generating unit, 4- insulation information monitoring units, 5- HF signal generators, 6- power amplifiers, 7- protection electric capacity, 8- high frequencies are encouraged
Magnetic transformer, 9- protective resistances, 10- straight-through current transformers, 11- pressure regulators, 12- second is without shelf depreciation wire, 13-
One without shelf depreciation wire, the GIS air chambers of 14- the first, 15- the first cable termination pilot systems, the cable terminations of 16- second experiment system
System, the cable accessories of 17- second, the GIS air chambers of 18- the 2nd, the cable accessories of 19- first, 20- infrared thermoviewers, the high-frequency electricals of 21- first
Current transformer, 22- high frequency partials electric discharge monitor, the HF current transformers of 23- second, 24-XLPE connecting cables.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, technical scheme of this implementation in new is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole embodiments.
Based on the embodiment in the utility model, those of ordinary skill in the art are obtained on the premise of creative work is not made
Every other embodiment, belong to the utility model protection scope.
As depicted in figs. 1 and 2, XLPE cable annex high frequency electrical ageing test dress is pressed in one kind provided by the utility model
Put, including high frequency test voltage generating unit 1, high frequency voltage test loop unit 2, power frequency load current simulation generating unit 3
With insulation information monitoring unit 4；High frequency test voltage generating unit 1 electrically connects with high frequency voltage test loop unit 2；Power frequency is born
Charged flow field simulation generating unit 3 is connected to high frequency voltage test loop unit 2, using magnetic coupling mode, to simulate generation work
Frequency load current；Insulation information monitoring unit 4 is connected on the ground lead of high frequency voltage test loop unit 2；High frequency voltage
Test loop unit 2 includes XLPE connecting cables 24, second without shelf depreciation wire 12 and cable termination pilot system, described
Cable termination pilot system includes the first cable termination pilot system 15 and the second cable termination pilot system 16；Described first
The cable termination pilot system 16 of cable termination pilot system 15 and second is by XLPE connecting cables 24 and second without shelf depreciation
Wire 12 is connected in series and forms test loop；In degradation, high frequency test voltage generating unit 1 and power frequency load current
Simulation generating unit 3 is run simultaneously, with reach in high frequency test voltage generating unit 1 test specimen and meanwhile bear high frequency voltage with
The purpose of power current effect；XLPE connecting cables 24 are the ZR-YJLV22-26/35kV type XLPE cables of one section of 10-15 rice.
First cable termination pilot system 15 includes internal the first cable accessory 19 and the first GIS containing typical defective mounting
Air chamber 14；Second cable termination pilot system includes internal the second cable accessory 17 and the 2nd GIS gas containing typical defective mounting
Room 18；The first GIS air chambers 14 and the 2nd GIS air chambers 18 are inserted in one end of first cable accessory 19 and the second cable accessory 17 respectively
In, the other end is connected with each other by second without shelf depreciation wire 12；First GIS air chambers 14 and the 2nd GIS air chambers 18 pass through
XLPE connecting cables 24 are connected with each other；The metallic connection parts position of each part is using through equal in high frequency voltage test loop unit 2
The high-voltage connection terminal of pressure and shielding processing is attached, to prevent from producing corona discharge during high-frequency and high-voltage is applied.
First cable accessory 19 and the second cable accessory 17 use prefabricated outdoor terminal, and prefabricated outdoor terminal includes electricity
Cable major insulation sleeve pipe, stress cone, heat-shrink tube and external insulation casing pipe, cable major insulation sleeve pipe and stress cone are separately positioned on external insulation
Head and afterbody in sleeve pipe, external insulation casing pipe are interference fitted with cable major insulation sleeve pipe and stress cone respectively；The one of heat-shrink tube
External insulation casing pipe is stretched at end, is socketed with stress cone, and the other end stretches out external insulation casing pipe；Stress cone is taper, with cable master
Insulating sleeve is socketed；External insulation casing pipe is taper, and the outer surface of its inner surface and stress cone coordinates.
High frequency test voltage generating unit 1 includes HF signal generator 5, power amplifier 6 and high frequency excitation transformation
Device 8；HF signal generator 5 electrically connects with power amplifier 6, and HF signal generator 5 produces high frequency low voltage signal, and passes through
Power amplifier 6 is amplified；Power amplifier 6 is by protecting electric capacity 7 to be electrically connected with high frequency exciting transformer 8；Protect electric capacity 7
Capacitance be not more than 1.13 μ F, for changing the output impedance of power amplifier 6, to prevent that it is excessive that power amplifier 6 from producing
Power output；High frequency exciting transformer 8, for being boosted the high frequency low voltage signal amplified through power amplifier 6 to obtain
Required high-frequency and high-voltage must be tested；High frequency exciting transformer 8 is by protective resistance 9 and first without shelf depreciation wire 13 and high frequency
Voltage test circuit units 2 are electrically connected；First without middle part of the shelf depreciation wire 13 and second without shelf depreciation wire 12
It is electrically connected；Protective resistance 9 uses water resistance, and the high pressure exported by high frequency exciting transformer 8 is multiplied by current-limiting resistance coefficient 1.5
Ω/V selects its resistance, and protective resistance 9 is used to limit the output current of high frequency exciting transformer 8 and carry out overcurrent protection；First
Without shelf depreciation wire 13, for high-frequency and high-voltage caused by high frequency exciting transformer 8 to be led into high frequency voltage test loop unit
2。
Power frequency load current simulation generating unit 3 includes 220V power-frequency voltages, straight-through current transformer 10 and pressure regulator
11, the input of pressure regulator 11 is connected with 220V power-frequency voltages, output end and the straight-through current transformer 10 of pressure regulator 11
Secondary side connects, and XLPE connecting cables 24 are centrally formed magnetic coupling loop through straight-through current transformer 10；When punching electricity
When flowing through power current in the secondary coil of current transformer 10, under electromagnetic induction principle, in high frequency voltage test loop unit 2
Power current will be produced；By controlling the output voltage size of pressure regulator 11, change the secondary coil of straight-through current transformer 10
In size of current, so as to realize the adjustment on demand of electric current in high frequency voltage test loop unit 2.
The information monitoring unit 4 that insulate includes infrared thermoviewer 20, HF current transformer and high frequency partial electric discharge monitoring
Instrument 22, HF current transformer include the first HF current transformer 21 and the second HF current transformer 23；Infrared thermoviewer
20, for monitoring the temperature change feelings on the first cable accessory 19 and the surface of the second cable accessory 17 during high frequency degradation
Condition；First HF current transformer 21 and the second HF current transformer 23 are respectively engaged with the first GIS air chambers 14 and the 2nd GIS
On the ground lead of air chamber 18, and it is connected respectively with high frequency partial electric discharge monitor 22；High frequency partial electric discharge monitor 22, is used for
The shelf depreciation for monitoring typical defective mounting in the first cable accessory 19 and the second cable accessory during high frequency degradation becomes
Change situation；Insulation information monitoring unit 4 uses non-invasion monitoring method, realizes the first cable accessory 19 and the second cable is attached
The status monitoring of the insulation characterisitic parameter of part 17.
In degradation, regulation HF signal generator 5 makes it export high frequency low voltage signal, and high frequency low voltage signal passes through
After power amplifier 6 amplifies, send high frequency exciting transformer 8 to, the input voltage parameter of regulation high frequency exciting transformer 8, make
Its output frequency is 10kHz, amplitude 15kV（Virtual value）High-frequency and high-voltage, by first without shelf depreciation wire 13 by high frequency
Voltage is led to high frequency voltage test loop unit 2；The size of the output voltage of pressure regulator 11 is adjusted simultaneously, and it is mutual to change centre path current
The input voltage of sensor 10, make the power current that 200A is produced in high frequency voltage test loop unit 2；Now, first is realized
The cable accessory 17 of cable accessory 19 and second is operated in high frequency voltage and lower the be subjected to high frequency forceful electric power of power current effect simultaneously
Field and the simulation of electric current thermal stress；Infrared thermoviewer 20 in insulation information monitoring unit 4 monitors the first cable accessory in real time
19 and the temperature variations on the surface of the second cable accessory 17；High frequency partial electric discharge monitor 22 monitors the first cable accessory in real time
19 and second typical defective mounting in cable accessory 17 shelf depreciation situation of change.
Above disclosed is only specific embodiment of the present utility model, but the scope of protection of the utility model not office
It is limited to this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Change or modification, should all cover within the scope of protection of the utility model.
Claims (8)
1. XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind, it is characterised in that：Occur including high frequency test voltage
Unit（1）, high frequency voltage test loop unit（2）, power frequency load current simulation generating unit（3）With insulation information monitoring unit
（4）；The high frequency test voltage generating unit（1）, for producing the high frequency voltage needed for experiment and being supplied to the high-frequency electrical
Press test loop unit（2）；The high frequency test voltage generating unit（1）With high frequency voltage test loop unit（2）Electricity
Connection；The power frequency load current simulates generating unit（3）It is connected to high frequency voltage test loop unit（2）, using magnetic
Field coupled modes, power frequency load current is produced to simulate；The insulation information monitoring unit（4）It is connected in the high frequency voltage examination
Test circuit units（2）Ground lead on, for monitoring the state of XLPE cable annex insulation characterisitic parameter；The high frequency voltage
Test loop unit（2）Including XLPE connecting cables（24）, second without shelf depreciation wire（12）With cable termination pilot system,
Described cable termination pilot system includes the first cable termination pilot system（15）With the second cable termination pilot system（16）；
The first described cable termination pilot system（15）With the second cable termination pilot system（16）Pass through XLPE connecting cables（24）
With second without shelf depreciation wire（12）It is connected in series and forms test loop；In degradation, the high frequency test voltage
Generating unit（1）Generating unit is simulated with the power frequency load current（3）Run, tested back with reaching the high frequency voltage simultaneously
Road unit（2）In test specimen simultaneously bear high frequency voltage and power current effect purpose.
2. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 1, it is characterised in that：Described
One cable termination pilot system（15）Including inside the first cable accessory containing typical defective mounting（19）With the first GIS air chambers
（14）；The second described cable termination pilot system（16）Including inside the second cable accessory containing typical defective mounting（17）With
2nd GIS air chambers（18）；The first described cable accessory（19）With the second cable accessory（17）One end insert the first GIS respectively
Air chamber（14）With the 2nd GIS air chambers（18）, the other end is by second without shelf depreciation wire（12）It is connected with each other；Described first
GIS air chambers（14）With the 2nd GIS air chambers（18）Pass through XLPE connecting cables（24）It is connected with each other.
3. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 2, it is characterised in that：First cable
Annex（19）With the second cable accessory（17）Use prefabricated outdoor terminal.
4. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 3, it is characterised in that：It is described prefabricated
Formula outdoor terminal includes cable major insulation sleeve pipe, stress cone, heat-shrink tube and external insulation casing pipe, cable major insulation sleeve pipe and stress cone
The head being separately positioned in external insulation casing pipe and afterbody, external insulation casing pipe respectively with cable major insulation sleeve pipe and stress cone interference
Coordinate；External insulation casing pipe is stretched into one end of heat-shrink tube, is socketed with stress cone, and the other end stretches out external insulation casing pipe；Stress cone is cone
Shape sleeve pipe, it is socketed with cable major insulation sleeve pipe；External insulation casing pipe is taper, and the outer surface of its inner surface and stress cone is matched somebody with somebody
Close.
5. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 1, it is characterised in that：Described height
Frequency test voltage generating unit（1）Including HF signal generator（5）, power amplifier（6）And high frequency exciting transformer
（8）；Described HF signal generator（5）With described power amplifier（6）Electrical connection；The power amplifier（6）Pass through
Protect electric capacity（7）With the high frequency exciting transformer（8）Electrical connection；The high frequency exciting transformer（8）Pass through protective resistance（9）
With first without shelf depreciation wire（13）With described high frequency voltage test loop unit（2）It is electrically connected；First nothing
Shelf depreciation wire（13）With described second without shelf depreciation wire（12）Middle part be electrically connected.
6. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 5, it is characterised in that：Described guarantor
Protect resistance（9）Using water resistance, its resistance presses high frequency exciting transformer（8）The high pressure of output be multiplied by the Ω of current-limiting resistance coefficient 1.5/
V is selected.
7. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 1, it is characterised in that：Described work
Frequency load current simulates generating unit（3）Including 220V power-frequency voltages, straight-through current transformer（10）And pressure regulator（11）, institute
State pressure regulator（11）Input be connected with 220V power-frequency voltages, the pressure regulator（11）Output end and the centre path current
Transformer（10）Secondary side connection；The XLPE connecting cables（24）Through the straight-through current transformer（10）Center
Form magnetic coupling loop.
8. pressure XLPE cable annex high-frequency electrical ageing test apparatus in as claimed in claim 2, it is characterised in that：Described is exhausted
Edge information monitoring unit（4）Including infrared thermoviewer（20）, HF current transformer and high frequency partial electric discharge monitor（22）,
The HF current transformer includes the first HF current transformer（21）With the second HF current transformer（23）；Described
One HF current transformer（21）With the second HF current transformer（23）It is respectively engaged with the first GIS air chambers（14）With second
GIS air chambers（18）Ground lead on, and the monitor that discharged respectively with described high frequency partial（22）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720486348.5U CN206756962U (en) | 2017-05-04 | 2017-05-04 | XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720486348.5U CN206756962U (en) | 2017-05-04 | 2017-05-04 | XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206756962U true CN206756962U (en) | 2017-12-15 |
Family
ID=60616149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720486348.5U Active CN206756962U (en) | 2017-05-04 | 2017-05-04 | XLPE cable annex high-frequency electrical ageing test apparatus is pressed in one kind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206756962U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254662A (en) * | 2018-03-15 | 2018-07-06 | 广东电网有限责任公司东莞供电局 | Partial discharge simulation device |
| CN109298267A (en) * | 2018-11-01 | 2019-02-01 | 国网浙江省电力有限公司舟山供电公司 | Crosslinked polyethylene ac cable is used for the reliability test system of flexible DC transmission |
-
2017
- 2017-05-04 CN CN201720486348.5U patent/CN206756962U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254662A (en) * | 2018-03-15 | 2018-07-06 | 广东电网有限责任公司东莞供电局 | Partial discharge simulation device |
| CN109298267A (en) * | 2018-11-01 | 2019-02-01 | 国网浙江省电力有限公司舟山供电公司 | Crosslinked polyethylene ac cable is used for the reliability test system of flexible DC transmission |
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